Chart for teaching music.



J.. WOITINEK.

CHART FOR TEACHING MUSIC.

APPLIOATION FILED 001'. 29, 1909.

1,058,831 Patented Apr. 15, 1913.

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COLUMBIA PLANOGRAPH C0.,wAsmNu10N. D. c.

JULIUS WOITINEK, OF POSEN, GERMANY.

CHART FOR TEACHING MUSIC.

Specification of Letters Patent.

Patented Apr. 15,1913.

Application filed October 29, 1909. Serial No. 525,409.

To all whom it mayc0ncern.'

Be it known that I, JULIUS WVorrINEK, a subject of the Emperor ofGermany, residing at 18 Gartenstrasse, Posen, Germany, have inventedcertain new and useful Improvements in Charts for Teaching Music, ofwhich the following is a specification.

This invention for improvements in apparatus for teaching music has forits object an improved device by which the elements of music can be moreeffectively and quickly taught than heretofore.

Now, according to my invention, keys marked with the names of the notesare arranged on a base board set up by the side of a black-board or thelike marked with the five lines of the staff, in such a way that thekeys are opposite their corresponding lines or spaces in the staff. Eachkey is pivoted along one of itshorizontal edges so that it can be turnedover, and is marked on the back with the same note flatted or sharped.Underneath each key in each of its positions is a push rod connected toa valve in a wind chest provided with reeds, in such a way that when akey is depressed the note marked on it is sounded. By this means anyscale can be sounded by simply turning over the key note or notes togive these notes flatted or sharped; and as these fiatted or sharpednotes are still opposite their lines or spaces in the staff, being onlyraised or lowered slightly, confusion in the pupils minds is effectuallyprevented.

Reference to the accompanying drawings:Figure 1 is a front elevation ofthe device, all the notes not belonging to the scale of C major being insmaller type. Fig. 2 is a sideelevation. Fig. 3 is a front elevationshowing the change from the scale of C major to the scale of G major byraising the F key to the position of F sharp. Fig. 4 shows the change ofthe scale of C major to the scale of F major by lowering the B key tothe position of B fiat, and Fig. 5 is a section on the line L M in Flg.2.

The blackboard ahas the five lines of the stafi marked on it as shown.The keys 6 are pivoted about one edge, on a support 0, as shown withtheir pivots d in line with the corresponding lines and spaces on theboard a. There is as shown a push rod i beneath each key in eachposition.

In Fig. 3 the F keys are turned upward over the F push rods, showing theF# signs on their reverse sides. Any cords or melodies played on thekeys now will be in the key of G major, but the keys will still beopposite their representation in the staff. In Fig. 4 is shown in thesame way the turning down of the B keys to the position of B fiat toform the scale of F major, and it will be readily understood that anyother scale can be formed in the same way by folding over the necessarykeys corresponding to the key-signature of the required scale.

lVhen a key is depressed, the ush rod 2' presses down the lever isagainst the action of a spring j, thus opening one of the valves 71.which are guided by guides o and causing the reed g in the wind-chest fto sound.

The wind chest is hinged at s and has an air inlet 1" which may beconnected to a foot bellows or other source of compressed air.

Having thus described my invention what I claim is:

1. An apparatus for teaching music comprising a series of keys each keybeing marked with the note which it sounds and pivoted about onehorizontal edge and marked on the reverse side with the flat or sharp ofthe note marked on its other side, and means actuated by the key forsounding the natural, or the flat or sharp according as the key is inits normal or reversed position.

2. An apparatus for teaching music comprising a series of reversiblekeys having suitable scale marks thereon, and a wind chest with reedsand valves, push rods for operating the valves, one push rod being ar-Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

